LAARS Mini-Combo II MCS - Install and Operating Manual - Manual (Page 7)

Mini-Combo II Page 7
H2001700H
THE BOILER WILL NOT OPERATE WITHOUT
THE AUTOMATIC VENT DAMPER. THE VENT
DAMPER WIRE HARNESS MUST BE
INSERTED INTO THE VENT DAMPER
RECEPTACLE
IN CANADA: SOME UNITS ARE SUPPLIED
WITH VENT DAMPER JUMPER PLUG. DO
NOT REMOVE JUMPER UNLESS VENT
DAMPER IS TO BE INSTALLED.
BK - BLACK
W - WHITE
R - RED
Y - YELLOW
BL - BLUE
BR - BROWN
O - ORANGE
P - PURPLE
G - GREEN
SPARK IGNITION WIRE
115V-FACTORY WIRED
115V-FIELD WIRED
24V-FACTORY WIRED
24V-FIELD WIRED
IF ANY OF THE ORIGINAL WIRE (AS
SUPPLIED WITH THE APPLIANCE) MUST
BE REPLACED, IT MUST BE REPLACED
WITH APPLIANCE WIRING MATERIAL
SUITABLE FOR 105 DEGREES C OR ITS
EQUIVALENT
GROUNDING
CONDUCTOR
115/60HZ
POWER SUPPLY
GAS VALVE
HW VR8300
PILOT BURNER &
THERMOCOUPLE
BR
SENSOR
BLOCKED
VENT
SAFETY
SWITCH
ROLL-OUT
SAFETY SWITCH
BK
BK
BL
BL
Y
TH
TR
TANK
PUMP
BR
R R
PUMP
(FIELD
SUPPLIED)
TANK
PUMP
RELAY
ZONE
PUMP
RELAY
HOT
NEUTRAL
24V
COM
SEN
NC COM NO TANK
AQUASTAT
WALL
THERMOSTAT
(FIELD
SUPPLIED)
OPTIONAL
AQUASTAT
HIGH
LIMIT VENT DAMPER
RECEPTACLE*
TRANSFORMER
TERMINAL
STRIP
R O
Y
P
BR
R
P
R
R
Y
Y
G
24V 115V
W
BK
BK
W
BK
BR
Y
Y
JUMPER
BL
MODEL MCT
POWER VENTER
FAN PROVING
SWITCH
RECEPTACLE
SEE DOC. 1056
P
Y
W
Y
*
Figure 5. Wiring Diagram, Model MCT.